This entry represents the installation of a new organ retaining 8 ranks of the existing Johnson & Son tracker from 1896. Identified through online information from J. Theodore Anderson, Archivist & Historian - National Presbyterian Ch. - DC (July 18, 2025): "I grew up in this church. In the 1957 the Delaware Organ Company of Buffalo removed the entire organ to their shop and did a fairly original rebuild. One stop an 8' Melodia was removed and replaced by a 3-rank mixture. The organ was re-installed and remained that way until 1974 when the Delaware Organ Company again removed the entire tracker organ from it's original site. The organ was taken to Buffalo where it was completely rebuilt as an electro-pneumatic instrument. 8 ranks from the original organ were combined with 4 new ranks and rebuilt as a unit system. A new stand alone console was built with 30 stops. The organ itself was placed in a new location at the back of the Sanctuary suspended in a chamber 30' above the floor cantilevered above the vaulted ceiling."